We simply do NOT KNOW why God decides to not intervene and we can simplu express POSSIBLE views, which is what I have done.
Your answer is, as I said, "It's a mystery". That's been covered extensively on this thread.
The thing is, proctect them from what? suffering? pain? death? all things that are part of the natural process of life and existence.
In the Christian world view, those are things that God set in motion. This can be reduced down to "protect them from himself". It's a failed argument.
In short we want God to make is immortal, we want no pain or suffering and want God to intervene so there is no pain and suffering and death, ever.
Why don't you address the question rather than attempt to tell other people what they want?